Controller and like handle.



lUNliF BUAT@ A l FREDRICK BROSTROM, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR OF ONE-HALF TO JESSE IVI. YOUN'I, OF SAN FRANCISCO, CALIFORNIA.

CONTROLLER AND LIKE HANDLE.

Application led February 19, 1916.

To all whom t may concern Be it known that I, FnriDnioK Bnos'raorr, a citizen oi' the United States, residing in the city and county of San Francisco and State of California, have invented new and useful improvements in Controller and like Handles, of which the following is a specifcation.

My invention relates to an improvement in controller'7 air brake, or other equivalent handles which are used to manipulate electric currents, such as the controllers employed upon street railway cars, which are driven by electricity, and which controller handles are turnable to energize or denergize the apparatus.

It consists of a plurality of jaws hinged so that they may be opened, said jaws having a double tapered chuck or socket adapted to fit in corresponding openings made in the two jaws and to be locked therein `by suitable closing means. The center of this socket is adapted to fit a shaft, stem, or

turning post which is turnable by means of the projecting handle of the device. The socket pieces are suitably guided by tongues and grooves and are normally separated by springs fitted between the sections, so that they may be closed by suitable means and adjusted to take up any wear between the handle, socket and post and thus `insure the apparatus against play or looseness.

It also comprises details of construction which will be more fully explained by reference to the accompanying drawings, in which- Figure l is a side elevation of the device. Fig. 2 is a plan view. Fig. 3 is an enlarged vertical section on line 3 3 of Fig. 2. Fig. 4 is an enlarged vertical section on line 4-4 of Fig. 2. Fig. 5 is an elevation of the chuck jaws. Fig. 6 is a horizontal section through the chuck jaws on line 6-6 of Fig. 3. Fig. 7 is a cross section or line 7-7 of 'f rig. i.

In apparatus that requires frequent and constant manipulation, such as what are termed controller bars and handles of eleetrically actuated street railways, the turning handle is lia-ble to become loose upon the-post to which it is fitted, and eventually this looseness causes a certain irregularity and inexactness of the movement of the parts.

lt is the object of my invention to over- Speccation of Letters Patent.

Patented May 3C, i916.

Serial No. 79,362.

come this difficulty, and for this purpose I have provided a means for closing and regulating the opening or socket which tits upon the top of the post or other part which is to be operated thereby.

As shown in the drawings, A is a handle bar of the usual construction having a horizontal extension B; and C is an extension parallel to the extension B and pivoted thereto, at the rear end, as shown at 2. At the i'ront end vertical openings may be made through the parts B and C in alinement with each other. These openings diverge from the top and bottom respectively toward the center forming a double taper.

Within these openings the adjustable chuck jaws 3 are fitted. There will be a plurality of these jaws separated from each other on lines preferably diagonal to the jaws, and the jaws are fitted with tongues 4l which are slidable in corresponding grooves in the sockets of the parts B and C. Any suitable means may be employed for closing these jaws together. They are normally separated by springs 5, as shown in horizontal section in Fig. 6. I have illustrated a manner of closing these jaws by means of a bolt G, which passes through the outer end of the hinged sections B and C, and by means of a nut 7 turnable upon this bolt the jaws are brought together. The conical shape of the socket members and their separation by these springs allows them to be litted over the rectangular upper end of the post or equivalent part, while the two sections are separated from each other by their springs. The turning of the nut on the screw will draw these together until they fit snugly about the post. iVhenever any looseness or wear occurs a further turning of the nut will draw the two members B and C toward each other, and, by reason of the conical exterior and the corresponding shape of the socket member, the sides of this member will be brought together against the tension oi its springs and will thus cause it to clamp firmly the head upon which it is fitted. n this manner these devices may be always kept firmly in place and no loose motion will be had by reason of any looseness at this point. The hinging ci' the two members B and C is at such a distance from the post that it gives very considerable leverage in closing the jaws toward each other.

Having thus described my invention, what I claim and desire to secure by Letters Patent isr v l'. A controller and like handle, consisting of jaws movable to and from each other having double Y conical openings therethrough, lining socket members made of a.

' `plurality of sections andV having aV double conical periphery adapted to lit the openings in the `jaws, a central opening Vadapted Vto lit the post to be turned, springs by Vwhich said jaws are normally separated, vertical i I guides within which they are slidable, and

post.

means to open or close saidjaws about the 2.V A controller and like handle comprising parallel snperposed members hinged together at a point betweenV the outer and in- Qopies 'of this patent may `'ne obtained for FREDRICK BROSTROM.

Witnesses JOHN H. HERRING, W. W. HEALEY.

ve cents -each, by addressing the Commissioner ct Patents. Washington, D. C. 

